Robotics
Degree of freedom (DoF)
A degree of freedom is an independent movement that a robot joint can produce. The total number of degrees of freedom measures how rich a machine's range of gestures is: the higher it is, the more numerous and natural the possible postures and movements.
Updated on 12 October 2026 · Libella Robotics · Also known as: DoF, DOF, degrees of freedom
A simple joint, such as an elbow that bends, counts as one degree of freedom. A human shoulder, able to rotate on three axes, counts as three. A humanoid with 23 degrees of freedom in total can walk and make gestures; at 43, it gains articulated hands and an expressiveness that changes the nature of its interaction with the public.
This is the figure to ask for when a supplier advertises a “humanoid robot” without naming the model. A previous-generation wheeled reception robot often tops out at around 17 to 20 degrees of freedom, none of them for the legs.
Beware of a common confusion: a high number of degrees of freedom does not mean the robot uses them all during a booking. The movements actually available depend on the programming and on the repertoire prepared for the event.
Key facts
| Definition | One independent joint movement |
|---|---|
| Unitree G1 | 23 to 43 depending on configuration |
| What it changes | Natural gestures, grasping |
Related terms